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Forum Discussion

Juventus_nz's avatar
Juventus_nz
Follower
Mar 04, 2017

DoS Attacks in the logs

Hey guys I have been getting disconnected from the internet at different times over the past week. At first i thought it might have been an ISP issue, spoke to them and multiple line checks revealed ...
DOS attacks
dropouts
Troubleshooting
KClaeys's avatar
KClaeys
Aspirant
Mar 26, 2017

Hi Darren,

The cable company came out and ran a new line from the house to the pole, put a new box on the house, we moved the modem, used new cables on everything and I am still having issues. Now I am getting T3 and T4 timesouts. One day the internet was dropping literally every 10 minutes. Of course, Cox tells me it is on my end and they are getting great signals. Interestingly enough, when I contacted that university about not pinging my internet, I haven't had one DoS attack. Here is the log from today when trouble started (again).  I am considering getting a modem from Cox and if I still have the same problems with one of THEIR modems, then I guess it is on them.

 
 
 
 
TimePriorityDescription
Mar 25 2017 20:31:39Notice (6)TLV-11 - unrecognized OID
Mar 25 2017 20:31:39Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Mar 25 2017 14:57:58Notice (6)TLV-11 - unrecognized OID
Mar 25 2017 14:57:57Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Mar 25 2017 14:52:58Notice (6)TLV-11 - unrecognized OID
Mar 25 2017 14:52:57Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Mar 25 2017 14:50:45Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:50:15Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:49:45Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:49:15Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:48:45Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:48:15Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:47:45Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:47:15Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:46:45Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:46:15Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:45:45Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:45:16Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:44:46Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:44:16Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:43:46Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:43:16Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:42:46Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:42:16Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:41:46Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:41:16Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:40:46Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:40:17Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:39:47Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:39:17Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:38:47Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted
Mar 25 2017 14:38:47Critical (3)Ranging Request Retries exhausted
Mar 25 2017 14:38:17Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:37:47Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:37:17Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:36:47Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:36:17Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:35:47Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:35:18Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Mar 25 2017 14:34:48Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:34:48Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out
Mar 25 2017 14:34:48Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out

 

DarrenM's avatar
DarrenM
Sr. NETGEAR Moderator
Mar 27, 2017

Hello KClaeys

 

It could be a bigger issue away from your homes lines but yea you may want to test another modem to be sure if its on there end or not but typically those T3 and T4 timeouts are.

 

DarrenM

  • PSGatoBW's avatar
    PSGatoBW
    Aspirant
    Jul 06, 2017

    I've had the same problems each person describes above, have set up trouble tickets, gotten your folks and Time Warner on the phone to duke it out, and it continues several weeks past the support period you offer. Quite frankly, I'm done with Netgear. You don't provide real resolution to this issue, as noted time and time again in reviewing this topic in the support community. My DOS attacks come from sites I frequent as well as sites I've never heard of or visited, nor has anyone else in our house visited them. I understand the device's job is to stop DOS attacks, but it sacrifices connection to the internet in doing so. THAT is the problem as I see it, but I'm woefully ignorant about the complicated world of IT. I'm sure it's more complicated, but the outcome is the same - we get booted from the internet and it takes anywhere from 30-45 minutes for the device to restabilize...until the next DOS attack. I hope you find a solution.